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In order to certify the validity of this method, the sound pressure radiated by an underwater ring-stiffened cylindrical shell is calculated employing the exterior Helmholtz integral equation and the SPL is compared with the experimental data of Chen and Schweikert[5].
Fig. 2 is a comparison between numerical results and experimental data.
Note that the minimum SPL of experimental data may be in error due to low signal-to-noise ratio.
Fig. 1 Dimension of the ribbed cylindrical shell Fig. 2 Comparison between experimental data and numerical results Four Different Finite Element Models.
The strengthened rib restricts the vibration of the shell, thus causes the reduction of mean square velocity level and sound radiation power level.

In this experiment, the silver nitrate as a activator, the quality of coating was guaranteed effectively by the technics optimization. 2.1 The technics process The technics of electroless plating on plastic: degreasing→water washing→acid Neutralization→ water washing→coarsening→water washing→alkali neutralization→water washing→sensitizing →water washing→activating→water washing→reduction→water washing→electroless plating.
Pay special attention in processing between each processing stage:flushing plastic surface with deionized water thoroughly to strictly avoid process residue solution to the next working procedure. 2.2 Technics optimization of electroless plating copper By many times explore experiments, the bath composition was decided:CuSO4:6-8g/L; NaOH: 8-10g/L；Sodium potassium tartrate:18g/L; formaldehyde 10ml/L, and three main factors (pH, temperature, CuSO4) was designed and the three factors and three levels orthogonal design test was carried out two times, the second time data of orthogonal design experiment shown in table 1.
Table1 Orthogonal design test of electroless plating Copper number CuSO4 (g/L) pH temperature/℃ Coating quality 1 6 12 20 2.5 2 6 13 30 4.5 3 6 14 40 3 4 7 12 30 3.5 5 7 13 40 4 6 7 14 20 3 7 8 12 40 3 8 8 13 20 4 9 8 14 30 3 K1 10 9 9.5 K2 10.5 12.5 11 K3 10 10 10 k1 3.33 3.00 3.17 k2 3.5 4.17 3.67 k3 3.33 3.33 3.33 R 0.17 1.17 0.5 Gross score K - factors drawing as follows: Graph1 Trend of [CuSO4 ] in orthogonal design Graph 2 Trend of pH in orthogonal design Graph3 Trend of temperature in orthogonal design According to the orthogonal design test data, data analysis, mapping, the following conclusions can be found: (1) in the technics of the three main influencing factors, the most important factor is pH value
Quality score 1 60 40 30 2 2 60 50 35 4 3 60 60 40 2.5 4 65 40 35 4.5 5 65 50 40 5 6 65 60 30 4.5 7 70 40 40 3.5 8 70 50 30 4 9 70 60 35 3.5 K1 8.5 10 10.5 summation=31 K2 14 13 12 K3 11 10.5 11 k1 2.83 3.33 3.5 k2 4.67 4.33 4 k3 3.67 3.5 3.67 R 1.00 1.00 0.5 The graphs were drew according to the data of table 3： Graph4 Effect of T in orthogonal design Graph5 Effect of Na2WO4·2H2O in orthogonal design Graph 6 The effect of time in orthogonal design The optimum main technics condition obtained by the second orthogonal design is: temperature：65℃；concentration of Na2WO4·2H2O：50g /L；plating time：35min..

Materials and Methods Data were collected on 85 consecutively placed one-piece zirconia implants (Z-Systems, Oensingen, CH).
An initial PTV was recorded then another immediately after abutment reduction and no statistically significant difference between the PT values was observed.
The data collected were analyzed to investigate if there was any correlation between implant diameter, length, location, insertion torque and implant surface characteristics on the pattern of osseointegration and implant stability during the four months pre-restorative.
Based on our data the implant length and diameter have no effect on the PTV values, even when the abutments had to be reduced for occlusal clearance.
The data collected during this analysis show that the laser etched surfaces have higher levels of stability than sandblasted ones.

Ground-source heat pump (GSHP) which is saving energy, environmental friendly and stable [3], will become the main direction of energy saving and emission reduction in the future building field [4].
The testing system is made up of a portable computer, a data acquisition card, temperature sensors, power converters, and flowmeters.
The principle is that the signals from temperature sensors, power converters and flowmeters, are processed by the data acquisition board, and then input to the computer.
In the portable computer, the MCGS software which is connected to the data acquisition device, can display and store the data timely.

The most experimental data lead to the conclusion that the electrical and optical properties of 3d impurities arise from partially filled atomic-like 3d orbitals, which are qualitatively the same as in the isolated ions.
There are other data, however, suggesting delocalized 3d states, which strongly interact with the host.
The Uv value was evaluated from the data of [8] and was equal to 0.2 eV.
In Table 2 we present calculated and experimental data for the main TM charge state transitions in SiC.
The significant reduction of the Coulomb energies relative to their values in the free ions is a consequence of a charge self-regulating response, whereby valence-band resonances accommodate population changes in the gap levels.

Image processing Image processing course generally includes transformation, enhancement, noise reduction, and so on.
The calculations are: (4) (5) (6) Fig. 3 Structure of the robotic arm The angles are respectively programmed into a 4 byte- direction that is immediately sent through the serial port to FPGA, which reads the data and controls the robotic arm.
The program keeps waiting until the data from the serial port arrived.
When the data comes, the slave computer judges whether the data is valuable.

Samples were homogenized by annealing at 410°C for 24 hours and then cold rolled to 25% reduction.
EBSD data was processed using OIM Data Analysis software from for finding recrystallization fraction and determining the CSL fractions based on Brandon criterion [3].
Further data processing on triple junction analysis was achieved using the exported reconstructed boundary segments.
Analysis of the data shows that the high fraction of Σ3 boundaries initiates in the recrystallizing fraction of the GBE material, but then decreases rather quickly after reaching 50% recrystallized.

The energy efficiency of heat pump hosts and systems is calculated based on the test data, as well as the system's energy efficiency, economic and environmental benefits.
Through the analysis of data, we can analyze that the actual energy efficiency of heat pump system varies from -16% to 23% of its designed value and that the actual energy efficiency of conventional system only takes 86.5%-143.7% of designed value.
The measured values are monitoring data ,besides, the annual total cooling load is calculated by BIN method and the annual total heat load calculated by degree-day method [6-7].
From the data: the actual reducing volume such as CO2, SO2, Dust is lower than the calculated.
The heat supply working condition energy conservation ratio is 11.8% higher than the cooling working condition; (2) The emission reduction of CO2, SO2 and DU, acquired from the actual measurement is lower than the theoretically calculated; (3) The accumulative load is 1/3~2/3 of the calculated.

Therefore, substantial energy reduction in energy usage can be achieved if refrigerators that are more efficient are used.
Thermocouple is used to transmit the temperature data to the PLC CPU for control action.
The data transmitted to the PLC CPU is through a PLC analogue temperature module.
The temperature of the fresh food compartment is measured using a thermocouple and the data is recorded through a data logger.

By the contrast theoretical analysis of peat ground to subside, the theoretical result and actual monitor data fit well, and it proves that adoptive theories and parameters are appropriate.
As the soil layers are assumed to have no lateral expansions, and the compression of the soil layers are thought as the reduction of the pore volume, the s can be obtained according to the changes in the pore height of the soil column volume of a unit section and its proportion and the following equation is established
According to the long-term observation and key monitoring on the test engineering and the analysis and classification on the data obtained from sampling surveys, it can be seen that different peat soil roadbed disposal measures have their advantages and disadvantages.